title: Multi-channel 100-Gbit/s DQPSK data exchange using bidirectional degenerate four-wave mixing.
abstract: We propose a simple approach to performing simultaneous multi-channel data exchange using bidirectional degenerate four-wave mixing (FWM) in a single highly nonlinear fiber (HNLF) assisted by optical filtering. Data exchange between two-channel 100-Gbit/s return-to-zero differential quadrature phase-shift keying (RZ-DQPSK) signals with a variable channel spacing is implemented with a power penalty of less than 4.2 dB at a bit-error rate (BER) of 10(-9). Moreover, simultaneous ITU-grid-compatible four-channel 100-Gbit/s RZ-DQPSK data exchange is demonstrated with a power penalty of less than 4.7 dB at a BER of 10(-9).
authors.affiliation: Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA. wang41@usc.edu
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Hao
authors.initials: H
authors.lastname: Huang
authors.forename: Xue
authors.initials: X
authors.lastname: Wang
authors.forename: Jeng-Yuan
authors.initials: JY
authors.lastname: Yang
authors.forename: Alan E
authors.initials: AE
authors.lastname: Willner